[TVARC] Attic Antenna Advice and Council

[Tom Crawford]

The foil- good. It’s visible on the inside if it’s there. A realtor told me that they stopped using it at some point because it reduced cell phone coverage (or so it was believed).

If you get that GP-1 just somewhat in the clear, you’ll reach all the repeaters just fine. 

Good luck Jeff and 73,
Tom, W3TMC 




> On Apr 14, 2021, at 6:27 AM, Jeffrey M Taffuri <jtaffuri at gmail.com> wrote:
> 
> 
> Thanks Tom,
> 
> Lots of replies about foil on the roof.  I don't have any on the inside of the roof that I can see.  Is it possible it could be on the outside under the shingles?
> 
> You're the first person to mention polarization.
> 
> I'm looking at a Comet GP-1 Vertical VHF / UHF antenna with the goal of improving local RF connectivity (reachable repeaters and local simplex) .
> 
> So the only vertical items in the attic are the two solar light tubes.
> 
> I'm gathering from the remarks if I keep the antenna a several feet away from the tubes and not at a wavelength or wavelength multiple I am doing the best I can.
> 
> 73
> 
> Jeff KO4NCC
> 
> On 4/13/21 10:48 PM, Tom Crawford wrote:
>> Hi Jeff,
>> 
>> I’d like to ask you for some clarification on just what you’re going for-
>> You say you want a vhf/uhf antenna. 
>> Is this for hitting the local repeaters?
>> 
>> If that’s your goal, you’ll want a vertically polarized antenna, right? In other words, a vertical antenna. 
>> 
>> As mentioned earlier, the ductwork would largely be perpendicular to a vertical antenna (reducing their coupling effect), but if your roof has a foil barrier, you’ve got a nonstarter for and attic antenna- IMHO. 
>> 
>> 73,
>> Tom, W3TMC 
>> 
>> 
>> 
>> 
>> ______________________________________________________________
>> TVARC mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/tvarc
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:TVARC at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/tvarc/attachments/20210414/0286841d/attachment.html>